[PATCH v7 1/5] crypto: aspeed: Add HACE hash driver
Dhananjay Phadke
dphadke at linux.microsoft.com
Wed Jul 13 15:32:25 AEST 2022
Minor comments inline.
On 7/4/2022 7:09 PM, Neal Liu wrote:
> Hash and Crypto Engine (HACE) is designed to accelerate the
> throughput of hash data digest, encryption, and decryption.
>
> Basically, HACE can be divided into two independently engines
> - Hash Engine and Crypto Engine. This patch aims to add HACE
> hash engine driver for hash accelerator.
>
> Signed-off-by: Neal Liu <neal_liu at aspeedtech.com>
> Signed-off-by: Johnny Huang <johnny_huang at aspeedtech.com>
> ---
> MAINTAINERS | 7 +
> drivers/crypto/Kconfig | 1 +
> drivers/crypto/Makefile | 1 +
> drivers/crypto/aspeed/Kconfig | 23 +
> drivers/crypto/aspeed/Makefile | 6 +
> drivers/crypto/aspeed/aspeed-hace-hash.c | 1428 ++++++++++++++++++++++
> drivers/crypto/aspeed/aspeed-hace.c | 213 ++++
> drivers/crypto/aspeed/aspeed-hace.h | 181 +++
> 8 files changed, 1860 insertions(+)
> create mode 100644 drivers/crypto/aspeed/Kconfig
> create mode 100644 drivers/crypto/aspeed/Makefile
> create mode 100644 drivers/crypto/aspeed/aspeed-hace-hash.c
> create mode 100644 drivers/crypto/aspeed/aspeed-hace.c
> create mode 100644 drivers/crypto/aspeed/aspeed-hace.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 3cf9842d9233..63276700ee26 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -3136,6 +3136,13 @@ S: Maintained
> F: Documentation/devicetree/bindings/media/aspeed-video.txt
> F: drivers/media/platform/aspeed/
>
> +ASPEED CRYPTO DRIVER
> +M: Neal Liu <neal_liu at aspeedtech.com>
> +L: linux-aspeed at lists.ozlabs.org (moderated for non-subscribers)
> +S: Maintained
> +F: Documentation/devicetree/bindings/crypto/aspeed,ast2500-hace.yaml
> +F: drivers/crypto/aspeed/
> +
> ASUS NOTEBOOKS AND EEEPC ACPI/WMI EXTRAS DRIVERS
> M: Corentin Chary <corentin.chary at gmail.com>
> L: acpi4asus-user at lists.sourceforge.net
> diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
> index ee99c02c84e8..b9f5ee126881 100644
> --- a/drivers/crypto/Kconfig
> +++ b/drivers/crypto/Kconfig
> @@ -933,5 +933,6 @@ config CRYPTO_DEV_SA2UL
> acceleration for cryptographic algorithms on these devices.
>
> source "drivers/crypto/keembay/Kconfig"
> +source "drivers/crypto/aspeed/Kconfig"
>
> endif # CRYPTO_HW
> diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
> index f81703a86b98..116de173a66c 100644
> --- a/drivers/crypto/Makefile
> +++ b/drivers/crypto/Makefile
> @@ -1,5 +1,6 @@
> # SPDX-License-Identifier: GPL-2.0
> obj-$(CONFIG_CRYPTO_DEV_ALLWINNER) += allwinner/
> +obj-$(CONFIG_CRYPTO_DEV_ASPEED) += aspeed/
> obj-$(CONFIG_CRYPTO_DEV_ATMEL_AES) += atmel-aes.o
> obj-$(CONFIG_CRYPTO_DEV_ATMEL_SHA) += atmel-sha.o
> obj-$(CONFIG_CRYPTO_DEV_ATMEL_TDES) += atmel-tdes.o
> diff --git a/drivers/crypto/aspeed/Kconfig b/drivers/crypto/aspeed/Kconfig
> new file mode 100644
> index 000000000000..7c741695e9b1
> --- /dev/null
> +++ b/drivers/crypto/aspeed/Kconfig
> @@ -0,0 +1,23 @@
> +config CRYPTO_DEV_ASPEED
> + tristate "Support for Aspeed cryptographic engine driver"
> + depends on ARCH_ASPEED
> + help
> + Hash and Crypto Engine (HACE) is designed to accelerate the
> + throughput of hash data digest, encryption and decryption.
> +
> + Select y here to have support for the cryptographic driver
> + available on Aspeed SoC.
> +
> +config CRYPTO_DEV_ASPEED_HACE_HASH
> + bool "Enable Aspeed Hash & Crypto Engine (HACE) hash"
> + depends on CRYPTO_DEV_ASPEED
> + select CRYPTO_ENGINE
> + select CRYPTO_SHA1
> + select CRYPTO_SHA256
> + select CRYPTO_SHA512
> + select CRYPTO_HMAC
> + help
> + Select here to enable Aspeed Hash & Crypto Engine (HACE)
> + hash driver.
> + Supports multiple message digest standards, including
> + SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, and so on.
> diff --git a/drivers/crypto/aspeed/Makefile b/drivers/crypto/aspeed/Makefile
> new file mode 100644
> index 000000000000..8bc8d4fed5a9
> --- /dev/null
> +++ b/drivers/crypto/aspeed/Makefile
> @@ -0,0 +1,6 @@
> +obj-$(CONFIG_CRYPTO_DEV_ASPEED) += aspeed_crypto.o
> +aspeed_crypto-objs := aspeed-hace.o \
> + $(hace-hash-y)
> +
> +obj-$(CONFIG_CRYPTO_DEV_ASPEED_HACE_HASH) += aspeed-hace-hash.o
> +hace-hash-$(CONFIG_CRYPTO_DEV_ASPEED_HACE_HASH) := aspeed-hace-hash.o
> diff --git a/drivers/crypto/aspeed/aspeed-hace-hash.c b/drivers/crypto/aspeed/aspeed-hace-hash.c
> new file mode 100644
> index 000000000000..32631cf03244
> --- /dev/null
> +++ b/drivers/crypto/aspeed/aspeed-hace-hash.c
> @@ -0,0 +1,1428 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (c) 2021 Aspeed Technology Inc.
> + */
> +
> +#include "aspeed-hace.h"
> +
> +#ifdef ASPEED_AHASH_DEBUG
> +#define AHASH_DBG(h, fmt, ...) \
> + dev_info((h)->dev, "%s() " fmt, __func__, ##__VA_ARGS__)
> +#else
> +#define AHASH_DBG(h, fmt, ...) \
> + dev_dbg((h)->dev, "%s() " fmt, __func__, ##__VA_ARGS__)
> +#endif
Can this be defined in Kconfig (CONFIG_ASPEED_AHASH_DEBUG) like some
other drivers?
> +
> +/* Initialization Vectors for SHA-family */
> +static const u32 sha1_iv[8] = {
> + cpu_to_be32(SHA1_H0), cpu_to_be32(SHA1_H1),
> + cpu_to_be32(SHA1_H2), cpu_to_be32(SHA1_H3),
> + cpu_to_be32(SHA1_H4), 0, 0, 0
> +};
> +
> +static const u32 sha224_iv[8] = {
> + cpu_to_be32(SHA224_H0), cpu_to_be32(SHA224_H1),
> + cpu_to_be32(SHA224_H2), cpu_to_be32(SHA224_H3),
> + cpu_to_be32(SHA224_H4), cpu_to_be32(SHA224_H5),
> + cpu_to_be32(SHA224_H6), cpu_to_be32(SHA224_H7),
> +};
> +
> +static const u32 sha256_iv[8] = {
> + cpu_to_be32(SHA256_H0), cpu_to_be32(SHA256_H1),
> + cpu_to_be32(SHA256_H2), cpu_to_be32(SHA256_H3),
> + cpu_to_be32(SHA256_H4), cpu_to_be32(SHA256_H5),
> + cpu_to_be32(SHA256_H6), cpu_to_be32(SHA256_H7),
> +};
static const __be32 since using cpu_to_be32()?
> +
> +static const u64 sha384_iv[8] = {
> + cpu_to_be64(SHA384_H0), cpu_to_be64(SHA384_H1),
> + cpu_to_be64(SHA384_H2), cpu_to_be64(SHA384_H3),
> + cpu_to_be64(SHA384_H4), cpu_to_be64(SHA384_H5),
> + cpu_to_be64(SHA384_H6), cpu_to_be64(SHA384_H7)
> +};
> +
> +static const u64 sha512_iv[8] = {
> + cpu_to_be64(SHA512_H0), cpu_to_be64(SHA512_H1),
> + cpu_to_be64(SHA512_H2), cpu_to_be64(SHA512_H3),
> + cpu_to_be64(SHA512_H4), cpu_to_be64(SHA512_H5),
> + cpu_to_be64(SHA512_H6), cpu_to_be64(SHA512_H7)
> +};
same as above, static const __be64 since using cpu_to_be64()?
> +
> +static const u32 sha512_224_iv[16] = {
> + cpu_to_be32(0xC8373D8CUL), cpu_to_be32(0xA24D5419UL),
> + cpu_to_be32(0x6699E173UL), cpu_to_be32(0xD6D4DC89UL),
> + cpu_to_be32(0xAEB7FA1DUL), cpu_to_be32(0x829CFF32UL),
> + cpu_to_be32(0x14D59D67UL), cpu_to_be32(0xCF9F2F58UL),
> + cpu_to_be32(0x692B6D0FUL), cpu_to_be32(0xA84DD47BUL),
> + cpu_to_be32(0x736FE377UL), cpu_to_be32(0x4289C404UL),
> + cpu_to_be32(0xA8859D3FUL), cpu_to_be32(0xC8361D6AUL),
> + cpu_to_be32(0xADE61211UL), cpu_to_be32(0xA192D691UL)
> +};
> +
> +static const u32 sha512_256_iv[16] = {
> + cpu_to_be32(0x94213122UL), cpu_to_be32(0x2CF72BFCUL),
> + cpu_to_be32(0xA35F559FUL), cpu_to_be32(0xC2644CC8UL),
> + cpu_to_be32(0x6BB89323UL), cpu_to_be32(0x51B1536FUL),
> + cpu_to_be32(0x19773896UL), cpu_to_be32(0xBDEA4059UL),
> + cpu_to_be32(0xE23E2896UL), cpu_to_be32(0xE3FF8EA8UL),
> + cpu_to_be32(0x251E5EBEUL), cpu_to_be32(0x92398653UL),
> + cpu_to_be32(0xFC99012BUL), cpu_to_be32(0xAAB8852CUL),
> + cpu_to_be32(0xDC2DB70EUL), cpu_to_be32(0xA22CC581UL)
> +};
> +
> +static void aspeed_ahash_iV(struct aspeed_sham_reqctx *rctx)
> +{
> + if (rctx->flags & SHA_FLAGS_SHA1)
> + memcpy(rctx->digest, sha1_iv, 32);
> + else if (rctx->flags & SHA_FLAGS_SHA224)
> + memcpy(rctx->digest, sha224_iv, 32);
> + else if (rctx->flags & SHA_FLAGS_SHA256)
> + memcpy(rctx->digest, sha256_iv, 32);
> + else if (rctx->flags & SHA_FLAGS_SHA384)
> + memcpy(rctx->digest, sha384_iv, 64);
> + else if (rctx->flags & SHA_FLAGS_SHA512)
> + memcpy(rctx->digest, sha512_iv, 64);
> + else if (rctx->flags & SHA_FLAGS_SHA512_224)
> + memcpy(rctx->digest, sha512_224_iv, 64);
> + else if (rctx->flags & SHA_FLAGS_SHA512_256)
> + memcpy(rctx->digest, sha512_256_iv, 64);
> +}
Can use the "digsize" from reqctx to memcpy() instead lots of if..else
conditionals for every request?
> +
> +/* The purpose of this padding is to ensure that the padded message is a
> + * multiple of 512 bits (SHA1/SHA224/SHA256) or 1024 bits (SHA384/SHA512).
> + * The bit "1" is appended at the end of the message followed by
> + * "padlen-1" zero bits. Then a 64 bits block (SHA1/SHA224/SHA256) or
> + * 128 bits block (SHA384/SHA512) equals to the message length in bits
> + * is appended.
> + *
> + * For SHA1/SHA224/SHA256, padlen is calculated as followed:
> + * - if message length < 56 bytes then padlen = 56 - message length
> + * - else padlen = 64 + 56 - message length
> + *
> + * For SHA384/SHA512, padlen is calculated as followed:
> + * - if message length < 112 bytes then padlen = 112 - message length
> + * - else padlen = 128 + 112 - message length
> + */
> +static void aspeed_ahash_fill_padding(struct aspeed_hace_dev *hace_dev,
> + struct aspeed_sham_reqctx *rctx)
> +{
> + unsigned int index, padlen;
> + __be64 bits[2];
> +
> + AHASH_DBG(hace_dev, "rctx flags:0x%x\n", (u32)rctx->flags);
> +
> + switch (rctx->flags & SHA_FLAGS_MASK) {
> + case SHA_FLAGS_SHA1:
> + case SHA_FLAGS_SHA224:
> + case SHA_FLAGS_SHA256:
> + bits[0] = cpu_to_be64(rctx->digcnt[0] << 3);
> + index = rctx->bufcnt & 0x3f;
> + padlen = (index < 56) ? (56 - index) : ((64 + 56) - index);
> + *(rctx->buffer + rctx->bufcnt) = 0x80;
> + memset(rctx->buffer + rctx->bufcnt + 1, 0, padlen - 1);
> + memcpy(rctx->buffer + rctx->bufcnt + padlen, bits, 8);
> + rctx->bufcnt += padlen + 8;
> + break;
> + default:
> + bits[1] = cpu_to_be64(rctx->digcnt[0] << 3);
> + bits[0] = cpu_to_be64(rctx->digcnt[1] << 3 |
> + rctx->digcnt[0] >> 61);
> + index = rctx->bufcnt & 0x7f;
> + padlen = (index < 112) ? (112 - index) : ((128 + 112) - index);
> + *(rctx->buffer + rctx->bufcnt) = 0x80;
> + memset(rctx->buffer + rctx->bufcnt + 1, 0, padlen - 1);
> + memcpy(rctx->buffer + rctx->bufcnt + padlen, bits, 16);
> + rctx->bufcnt += padlen + 16;
> + break;
> + }
> +}
> +
> +/*
> + * Prepare DMA buffer before hardware engine
> + * processing.
> + */
> +static int aspeed_ahash_dma_prepare(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct device *dev = hace_dev->dev;
> + int length, remain;
> +
> + length = rctx->total + rctx->bufcnt;
> + remain = length % rctx->block_size;
> +
> + AHASH_DBG(hace_dev, "length:0x%x, remain:0x%x\n", length, remain);
> +
> + if (rctx->bufcnt)
> + memcpy(hash_engine->ahash_src_addr, rctx->buffer, rctx->bufcnt);
> +
> + if (rctx->total + rctx->bufcnt < ASPEED_CRYPTO_SRC_DMA_BUF_LEN) {
> + scatterwalk_map_and_copy(hash_engine->ahash_src_addr +
> + rctx->bufcnt, rctx->src_sg,
> + rctx->offset, rctx->total - remain, 0);
> + rctx->offset += rctx->total - remain;
> +
> + } else {
> + dev_warn(dev, "Hash data length is too large\n");
> + return -EINVAL;
> + }
> +
> + scatterwalk_map_and_copy(rctx->buffer, rctx->src_sg,
> + rctx->offset, remain, 0);
> +
> + rctx->bufcnt = remain;
> + rctx->digest_dma_addr = dma_map_single(hace_dev->dev, rctx->digest,
> + SHA512_DIGEST_SIZE,
> + DMA_BIDIRECTIONAL);
> + if (dma_mapping_error(hace_dev->dev, rctx->digest_dma_addr)) {
> + dev_warn(hace_dev->dev, "dma_map() rctx digest error\n");
> + return -ENOMEM;
> + }
> +
> + hash_engine->src_length = length - remain;
> + hash_engine->src_dma = hash_engine->ahash_src_dma_addr;
> + hash_engine->digest_dma = rctx->digest_dma_addr;
> +
> + return 0;
> +}
> +
> +/*
> + * Prepare DMA buffer as SG list buffer before
> + * hardware engine processing.
> + */
> +static int aspeed_ahash_dma_prepare_sg(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct aspeed_sg_list *src_list;
> + struct scatterlist *s;
> + int length, remain, sg_len, i;
> + int rc = 0;
> +
> + remain = (rctx->total + rctx->bufcnt) % rctx->block_size;
> + length = rctx->total + rctx->bufcnt - remain;
> +
> + AHASH_DBG(hace_dev, "%s:0x%x, %s:0x%x, %s:0x%x, %s:0x%x\n",
> + "rctx total", rctx->total, "bufcnt", rctx->bufcnt,
> + "length", length, "remain", remain);
> +
> + sg_len = dma_map_sg(hace_dev->dev, rctx->src_sg, rctx->src_nents,
> + DMA_TO_DEVICE);
> + if (!sg_len) {
> + dev_warn(hace_dev->dev, "dma_map_sg() src error\n");
> + rc = -ENOMEM;
> + goto end;
> + }
> +
> + src_list = (struct aspeed_sg_list *)hash_engine->ahash_src_addr;
> + rctx->digest_dma_addr = dma_map_single(hace_dev->dev, rctx->digest,
> + SHA512_DIGEST_SIZE,
> + DMA_BIDIRECTIONAL);
> + if (dma_mapping_error(hace_dev->dev, rctx->digest_dma_addr)) {
> + dev_warn(hace_dev->dev, "dma_map() rctx digest error\n");
> + rc = -ENOMEM;
> + goto free_src_sg;
> + }
> +
> + if (rctx->bufcnt != 0) {
> + rctx->buffer_dma_addr = dma_map_single(hace_dev->dev,
> + rctx->buffer,
> + rctx->block_size * 2,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(hace_dev->dev, rctx->buffer_dma_addr)) {
> + dev_warn(hace_dev->dev, "dma_map() rctx buffer error\n");
> + rc = -ENOMEM;
> + goto free_rctx_digest;
> + }
> +
> + src_list[0].phy_addr = rctx->buffer_dma_addr;
> + src_list[0].len = rctx->bufcnt;
> + length -= src_list[0].len;
> +
> + /* Last sg list */
> + if (length == 0)
> + src_list[0].len |= HASH_SG_LAST_LIST;
> +
> + src_list[0].phy_addr = cpu_to_le32(src_list[0].phy_addr);
> + src_list[0].len = cpu_to_le32(src_list[0].len);
> + src_list++;
> + }
> +
> + if (length != 0) {
> + for_each_sg(rctx->src_sg, s, sg_len, i) {
> + src_list[i].phy_addr = sg_dma_address(s);
> +
> + if (length > sg_dma_len(s)) {
> + src_list[i].len = sg_dma_len(s);
> + length -= sg_dma_len(s);
> +
> + } else {
> + /* Last sg list */
> + src_list[i].len = length;
> + src_list[i].len |= HASH_SG_LAST_LIST;
> + length = 0;
> + }
> +
> + src_list[i].phy_addr = cpu_to_le32(src_list[i].phy_addr);
> + src_list[i].len = cpu_to_le32(src_list[i].len);
> + }
> + }
> +
> + if (length != 0) {
> + rc = -EINVAL;
> + goto free_rctx_buffer;
> + }
> +
> + rctx->offset = rctx->total - remain;
> + hash_engine->src_length = rctx->total + rctx->bufcnt - remain;
> + hash_engine->src_dma = hash_engine->ahash_src_dma_addr;
> + hash_engine->digest_dma = rctx->digest_dma_addr;
> +
> + goto end;
> +
> +free_rctx_buffer:
> + if (rctx->bufcnt != 0)
> + dma_unmap_single(hace_dev->dev, rctx->buffer_dma_addr,
> + rctx->block_size * 2, DMA_TO_DEVICE);
> +free_rctx_digest:
> + dma_unmap_single(hace_dev->dev, rctx->digest_dma_addr,
> + SHA512_DIGEST_SIZE, DMA_BIDIRECTIONAL);
> +free_src_sg:
> + dma_unmap_sg(hace_dev->dev, rctx->src_sg, rctx->src_nents,
> + DMA_TO_DEVICE);
> +end:
> + return rc;
> +}
> +
> +static int aspeed_ahash_complete(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> +
> + AHASH_DBG(hace_dev, "\n");
> +
> + hash_engine->flags &= ~CRYPTO_FLAGS_BUSY;
> +
> + crypto_finalize_hash_request(hace_dev->crypt_engine_hash, req, 0);
> +
> + return 0;
> +}
> +
> +/*
> + * Copy digest to the corresponding request result.
> + * This function will be called at final() stage.
> + */
> +static int aspeed_ahash_transfer(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> +
> + AHASH_DBG(hace_dev, "\n");
> +
> + dma_unmap_single(hace_dev->dev, rctx->digest_dma_addr,
> + SHA512_DIGEST_SIZE, DMA_BIDIRECTIONAL);
> +
> + dma_unmap_single(hace_dev->dev, rctx->buffer_dma_addr,
> + rctx->block_size * 2, DMA_TO_DEVICE);
> +
> + memcpy(req->result, rctx->digest, rctx->digsize);
> +
> + return aspeed_ahash_complete(hace_dev);
> +}
> +
> +/*
> + * Trigger hardware engines to do the math.
> + */
> +static int aspeed_hace_ahash_trigger(struct aspeed_hace_dev *hace_dev,
> + aspeed_hace_fn_t resume)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> +
> + AHASH_DBG(hace_dev, "src_dma:0x%x, digest_dma:0x%x, length:0x%x\n",
> + hash_engine->src_dma, hash_engine->digest_dma,
> + hash_engine->src_length);
> +
> + rctx->cmd |= HASH_CMD_INT_ENABLE;
> + hash_engine->resume = resume;
> +
> + ast_hace_write(hace_dev, hash_engine->src_dma, ASPEED_HACE_HASH_SRC);
> + ast_hace_write(hace_dev, hash_engine->digest_dma,
> + ASPEED_HACE_HASH_DIGEST_BUFF);
> + ast_hace_write(hace_dev, hash_engine->digest_dma,
> + ASPEED_HACE_HASH_KEY_BUFF);
> + ast_hace_write(hace_dev, hash_engine->src_length,
> + ASPEED_HACE_HASH_DATA_LEN);
> +
> + /* Memory barrier to ensure all data setup before engine starts */
> + mb();
> +
> + ast_hace_write(hace_dev, rctx->cmd, ASPEED_HACE_HASH_CMD);
> +
> + return -EINPROGRESS;
> +}
> +
> +/*
> + * HMAC resume aims to do the second pass produces
> + * the final HMAC code derived from the inner hash
> + * result and the outer key.
> + */
> +static int aspeed_ahash_hmac_resume(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_sha_hmac_ctx *bctx = tctx->base;
> + int rc = 0;
> +
> + AHASH_DBG(hace_dev, "\n");
> +
> + dma_unmap_single(hace_dev->dev, rctx->digest_dma_addr,
> + SHA512_DIGEST_SIZE, DMA_BIDIRECTIONAL);
> +
> + dma_unmap_single(hace_dev->dev, rctx->buffer_dma_addr,
> + rctx->block_size * 2, DMA_TO_DEVICE);
> +
> + /* o key pad + hash sum 1 */
> + memcpy(rctx->buffer, bctx->opad, rctx->block_size);
> + memcpy(rctx->buffer + rctx->block_size, rctx->digest, rctx->digsize);
> +
> + rctx->bufcnt = rctx->block_size + rctx->digsize;
> + rctx->digcnt[0] = rctx->block_size + rctx->digsize;
> +
> + aspeed_ahash_fill_padding(hace_dev, rctx);
> + aspeed_ahash_iV(rctx);
> +
> + rctx->digest_dma_addr = dma_map_single(hace_dev->dev, rctx->digest,
> + SHA512_DIGEST_SIZE,
> + DMA_BIDIRECTIONAL);
> + if (dma_mapping_error(hace_dev->dev, rctx->digest_dma_addr)) {
> + dev_warn(hace_dev->dev, "dma_map() rctx digest error\n");
> + rc = -ENOMEM;
> + goto end;
> + }
> +
> + rctx->buffer_dma_addr = dma_map_single(hace_dev->dev, rctx->buffer,
> + rctx->block_size * 2,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(hace_dev->dev, rctx->buffer_dma_addr)) {
> + dev_warn(hace_dev->dev, "dma_map() rctx buffer error\n");
> + rc = -ENOMEM;
> + goto free_rctx_digest;
> + }
> +
> + hash_engine->src_dma = rctx->buffer_dma_addr;
> + hash_engine->src_length = rctx->bufcnt;
> + hash_engine->digest_dma = rctx->digest_dma_addr;
> +
> + return aspeed_hace_ahash_trigger(hace_dev, aspeed_ahash_transfer);
> +
> +free_rctx_digest:
> + dma_unmap_single(hace_dev->dev, rctx->digest_dma_addr,
> + SHA512_DIGEST_SIZE, DMA_BIDIRECTIONAL);
> +end:
> + return rc;
> +}
> +
> +static int aspeed_ahash_req_final(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + int rc = 0;
> +
> + AHASH_DBG(hace_dev, "\n");
> +
> + aspeed_ahash_fill_padding(hace_dev, rctx);
> +
> + rctx->digest_dma_addr = dma_map_single(hace_dev->dev,
> + rctx->digest,
> + SHA512_DIGEST_SIZE,
> + DMA_BIDIRECTIONAL);
> + if (dma_mapping_error(hace_dev->dev, rctx->digest_dma_addr)) {
> + dev_warn(hace_dev->dev, "dma_map() rctx digest error\n");
> + rc = -ENOMEM;
> + goto end;
> + }
> +
> + rctx->buffer_dma_addr = dma_map_single(hace_dev->dev,
> + rctx->buffer,
> + rctx->block_size * 2,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(hace_dev->dev, rctx->buffer_dma_addr)) {
> + dev_warn(hace_dev->dev, "dma_map() rctx buffer error\n");
> + rc = -ENOMEM;
> + goto free_rctx_digest;
> + }
> +
> + hash_engine->src_dma = rctx->buffer_dma_addr;
> + hash_engine->src_length = rctx->bufcnt;
> + hash_engine->digest_dma = rctx->digest_dma_addr;
> +
> + if (rctx->flags & SHA_FLAGS_HMAC)
> + return aspeed_hace_ahash_trigger(hace_dev,
> + aspeed_ahash_hmac_resume);
> +
> + return aspeed_hace_ahash_trigger(hace_dev, aspeed_ahash_transfer);
> +
> +free_rctx_digest:
> + dma_unmap_single(hace_dev->dev, rctx->digest_dma_addr,
> + SHA512_DIGEST_SIZE, DMA_BIDIRECTIONAL);
> +end:
> + return rc;
> +}
> +
> +static int aspeed_ahash_update_resume_sg(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> +
> + AHASH_DBG(hace_dev, "\n");
> +
> + dma_unmap_sg(hace_dev->dev, rctx->src_sg, rctx->src_nents,
> + DMA_TO_DEVICE);
> +
> + if (rctx->bufcnt != 0)
> + dma_unmap_single(hace_dev->dev, rctx->buffer_dma_addr,
> + rctx->block_size * 2,
> + DMA_TO_DEVICE);
> +
> + dma_unmap_single(hace_dev->dev, rctx->digest_dma_addr,
> + SHA512_DIGEST_SIZE, DMA_BIDIRECTIONAL);
> +
> + scatterwalk_map_and_copy(rctx->buffer, rctx->src_sg, rctx->offset,
> + rctx->total - rctx->offset, 0);
> +
> + rctx->bufcnt = rctx->total - rctx->offset;
> + rctx->cmd &= ~HASH_CMD_HASH_SRC_SG_CTRL;
> +
> + if (rctx->flags & SHA_FLAGS_FINUP)
> + return aspeed_ahash_req_final(hace_dev);
> +
> + return aspeed_ahash_complete(hace_dev);
> +}
> +
> +static int aspeed_ahash_update_resume(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> +
> + AHASH_DBG(hace_dev, "\n");
> +
> + dma_unmap_single(hace_dev->dev, rctx->digest_dma_addr,
> + SHA512_DIGEST_SIZE, DMA_BIDIRECTIONAL);
> +
> + if (rctx->flags & SHA_FLAGS_FINUP)
> + return aspeed_ahash_req_final(hace_dev);
> +
> + return aspeed_ahash_complete(hace_dev);
> +}
> +
> +static int aspeed_ahash_req_update(struct aspeed_hace_dev *hace_dev)
> +{
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + struct ahash_request *req = hash_engine->req;
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + aspeed_hace_fn_t resume;
> + int ret;
> +
> + AHASH_DBG(hace_dev, "\n");
> +
> + if (hace_dev->version == AST2600_VERSION) {
> + rctx->cmd |= HASH_CMD_HASH_SRC_SG_CTRL;
> + resume = aspeed_ahash_update_resume_sg;
> +
> + } else {
> + resume = aspeed_ahash_update_resume;
> + }
> +
> + ret = hash_engine->dma_prepare(hace_dev);
> + if (ret)
> + return ret;
> +
> + return aspeed_hace_ahash_trigger(hace_dev, resume);
> +}
> +
> +static int aspeed_hace_hash_handle_queue(struct aspeed_hace_dev *hace_dev,
> + struct ahash_request *req)
> +{
> + return crypto_transfer_hash_request_to_engine(
> + hace_dev->crypt_engine_hash, req);
> +}
> +
> +static int aspeed_ahash_do_request(struct crypto_engine *engine, void *areq)
> +{
> + struct ahash_request *req = ahash_request_cast(areq);
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> + struct aspeed_engine_hash *hash_engine;
> + int ret = 0;
> +
> + hash_engine = &hace_dev->hash_engine;
> + hash_engine->flags |= CRYPTO_FLAGS_BUSY;
> +
> + if (rctx->op == SHA_OP_UPDATE)
> + ret = aspeed_ahash_req_update(hace_dev);
> + else if (rctx->op == SHA_OP_FINAL)
> + ret = aspeed_ahash_req_final(hace_dev);
> +
> + if (ret != -EINPROGRESS)
> + return ret;
> +
> + return 0;
> +}
> +
> +static int aspeed_ahash_prepare_request(struct crypto_engine *engine,
> + void *areq)
> +{
> + struct ahash_request *req = ahash_request_cast(areq);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> + struct aspeed_engine_hash *hash_engine;
> +
> + hash_engine = &hace_dev->hash_engine;
> + hash_engine->req = req;
> +
> + if (hace_dev->version == AST2600_VERSION)
> + hash_engine->dma_prepare = aspeed_ahash_dma_prepare_sg;
> + else
> + hash_engine->dma_prepare = aspeed_ahash_dma_prepare;
> +
> + return 0;
> +}
> +
> +static int aspeed_sham_update(struct ahash_request *req)
> +{
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> +
> + AHASH_DBG(hace_dev, "req->nbytes: %d\n", req->nbytes);
> +
> + rctx->total = req->nbytes;
> + rctx->src_sg = req->src;
> + rctx->offset = 0;
> + rctx->src_nents = sg_nents(req->src);
> + rctx->op = SHA_OP_UPDATE;
> +
> + rctx->digcnt[0] += rctx->total;
> + if (rctx->digcnt[0] < rctx->total)
> + rctx->digcnt[1]++;
> +
> + if (rctx->bufcnt + rctx->total < rctx->block_size) {
> + scatterwalk_map_and_copy(rctx->buffer + rctx->bufcnt,
> + rctx->src_sg, rctx->offset,
> + rctx->total, 0);
> + rctx->bufcnt += rctx->total;
> +
> + return 0;
> + }
> +
> + return aspeed_hace_hash_handle_queue(hace_dev, req);
> +}
> +
> +static int aspeed_sham_shash_digest(struct crypto_shash *tfm, u32 flags,
> + const u8 *data, unsigned int len, u8 *out)
> +{
> + SHASH_DESC_ON_STACK(shash, tfm);
> +
> + shash->tfm = tfm;
> +
> + return crypto_shash_digest(shash, data, len, out);
> +}
> +
> +static int aspeed_sham_final(struct ahash_request *req)
> +{
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> +
> + AHASH_DBG(hace_dev, "req->nbytes:%d, rctx->total:%d\n",
> + req->nbytes, rctx->total);
> + rctx->op = SHA_OP_FINAL;
> +
> + return aspeed_hace_hash_handle_queue(hace_dev, req);
> +}
> +
> +static int aspeed_sham_finup(struct ahash_request *req)
> +{
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> + int rc1, rc2;
> +
> + AHASH_DBG(hace_dev, "req->nbytes: %d\n", req->nbytes);
> +
> + rctx->flags |= SHA_FLAGS_FINUP;
> +
> + rc1 = aspeed_sham_update(req);
> + if (rc1 == -EINPROGRESS || rc1 == -EBUSY)
> + return rc1;
> +
> + /*
> + * final() has to be always called to cleanup resources
> + * even if update() failed, except EINPROGRESS
> + */
> + rc2 = aspeed_sham_final(req);
> +
> + return rc1 ? : rc2;
> +}
> +
> +static int aspeed_sham_init(struct ahash_request *req)
> +{
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> + struct aspeed_sha_hmac_ctx *bctx = tctx->base;
> +
> + AHASH_DBG(hace_dev, "%s: digest size:%d\n",
> + crypto_tfm_alg_name(&tfm->base),
> + crypto_ahash_digestsize(tfm));
> +
> + rctx->cmd = HASH_CMD_ACC_MODE;
> + rctx->flags = 0;
> +
> + switch (crypto_ahash_digestsize(tfm)) {
> + case SHA1_DIGEST_SIZE:
> + rctx->cmd |= HASH_CMD_SHA1 | HASH_CMD_SHA_SWAP;
> + rctx->flags |= SHA_FLAGS_SHA1;
> + rctx->digsize = SHA1_DIGEST_SIZE;
> + rctx->block_size = SHA1_BLOCK_SIZE;
> + memcpy(rctx->digest, sha1_iv, 32);
> + break;
> + case SHA224_DIGEST_SIZE:
> + rctx->cmd |= HASH_CMD_SHA224 | HASH_CMD_SHA_SWAP;
> + rctx->flags |= SHA_FLAGS_SHA224;
> + rctx->digsize = SHA224_DIGEST_SIZE;
> + rctx->block_size = SHA224_BLOCK_SIZE;
> + memcpy(rctx->digest, sha224_iv, 32);
> + break;
> + case SHA256_DIGEST_SIZE:
> + rctx->cmd |= HASH_CMD_SHA256 | HASH_CMD_SHA_SWAP;
> + rctx->flags |= SHA_FLAGS_SHA256;
> + rctx->digsize = SHA256_DIGEST_SIZE;
> + rctx->block_size = SHA256_BLOCK_SIZE;
> + memcpy(rctx->digest, sha256_iv, 32);
> + break;
> + case SHA384_DIGEST_SIZE:
> + rctx->cmd |= HASH_CMD_SHA512_SER | HASH_CMD_SHA384 |
> + HASH_CMD_SHA_SWAP;
> + rctx->flags |= SHA_FLAGS_SHA384;
> + rctx->digsize = SHA384_DIGEST_SIZE;
> + rctx->block_size = SHA384_BLOCK_SIZE;
> + memcpy(rctx->digest, sha384_iv, 64);
> + break;
> + case SHA512_DIGEST_SIZE:
> + rctx->cmd |= HASH_CMD_SHA512_SER | HASH_CMD_SHA512 |
> + HASH_CMD_SHA_SWAP;
> + rctx->flags |= SHA_FLAGS_SHA512;
> + rctx->digsize = SHA512_DIGEST_SIZE;
> + rctx->block_size = SHA512_BLOCK_SIZE;
> + memcpy(rctx->digest, sha512_iv, 64);
> + break;
> + default:
> + dev_warn(tctx->hace_dev->dev, "digest size %d not support\n",
> + crypto_ahash_digestsize(tfm));
> + return -EINVAL;
> + }
> +
> + rctx->bufcnt = 0;
> + rctx->total = 0;
> + rctx->digcnt[0] = 0;
> + rctx->digcnt[1] = 0;
> +
> + /* HMAC init */
> + if (tctx->flags & SHA_FLAGS_HMAC) {
> + rctx->digcnt[0] = rctx->block_size;
> + rctx->bufcnt = rctx->block_size;
> + memcpy(rctx->buffer, bctx->ipad, rctx->block_size);
> + rctx->flags |= SHA_FLAGS_HMAC;
> + }
> +
> + return 0;
> +}
> +
> +static int aspeed_sha512s_init(struct ahash_request *req)
> +{
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> + struct aspeed_sha_hmac_ctx *bctx = tctx->base;
> +
> + AHASH_DBG(hace_dev, "digest size: %d\n", crypto_ahash_digestsize(tfm));
> +
> + rctx->cmd = HASH_CMD_ACC_MODE;
> + rctx->flags = 0;
> +
> + switch (crypto_ahash_digestsize(tfm)) {
> + case SHA224_DIGEST_SIZE:
> + rctx->cmd |= HASH_CMD_SHA512_SER | HASH_CMD_SHA512_224 |
> + HASH_CMD_SHA_SWAP;
> + rctx->flags |= SHA_FLAGS_SHA512_224;
> + rctx->digsize = SHA224_DIGEST_SIZE;
> + rctx->block_size = SHA512_BLOCK_SIZE;
> + memcpy(rctx->digest, sha512_224_iv, SHA224_BLOCK_SIZE);
> + break;
> + case SHA256_DIGEST_SIZE:
> + rctx->cmd |= HASH_CMD_SHA512_SER | HASH_CMD_SHA512_256 |
> + HASH_CMD_SHA_SWAP;
> + rctx->flags |= SHA_FLAGS_SHA512_256;
> + rctx->digsize = SHA256_DIGEST_SIZE;
> + rctx->block_size = SHA512_BLOCK_SIZE;
> + memcpy(rctx->digest, sha512_256_iv, SHA256_BLOCK_SIZE);
> + break;
> + default:
> + dev_warn(tctx->hace_dev->dev, "digest size %d not support\n",
> + crypto_ahash_digestsize(tfm));
> + return -EINVAL;
> + }
> +
> + rctx->bufcnt = 0;
> + rctx->total = 0;
> + rctx->digcnt[0] = 0;
> + rctx->digcnt[1] = 0;
> +
> + /* HMAC init */
> + if (tctx->flags & SHA_FLAGS_HMAC) {
> + rctx->digcnt[0] = rctx->block_size;
> + rctx->bufcnt = rctx->block_size;
> + memcpy(rctx->buffer, bctx->ipad, rctx->block_size);
> + rctx->flags |= SHA_FLAGS_HMAC;
> + }
> +
> + return 0;
> +}
> +
> +static int aspeed_sham_digest(struct ahash_request *req)
> +{
> + return aspeed_sham_init(req) ? : aspeed_sham_finup(req);
> +}
> +
> +static int aspeed_sham_setkey(struct crypto_ahash *tfm, const u8 *key,
> + unsigned int keylen)
> +{
> + struct aspeed_sham_ctx *tctx = crypto_ahash_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> + struct aspeed_sha_hmac_ctx *bctx = tctx->base;
> + int ds = crypto_shash_digestsize(bctx->shash);
> + int bs = crypto_shash_blocksize(bctx->shash);
> + int err = 0;
> + int i;
> +
> + AHASH_DBG(hace_dev, "%s: keylen:%d\n", crypto_tfm_alg_name(&tfm->base),
> + keylen);
> +
> + if (keylen > bs) {
> + err = aspeed_sham_shash_digest(bctx->shash,
> + crypto_shash_get_flags(bctx->shash),
> + key, keylen, bctx->ipad);
> + if (err)
> + return err;
> + keylen = ds;
> +
> + } else {
> + memcpy(bctx->ipad, key, keylen);
> + }
> +
> + memset(bctx->ipad + keylen, 0, bs - keylen);
> + memcpy(bctx->opad, bctx->ipad, bs);
> +
> + for (i = 0; i < bs; i++) {
> + bctx->ipad[i] ^= HMAC_IPAD_VALUE;
> + bctx->opad[i] ^= HMAC_OPAD_VALUE;
> + }
> +
> + return err;
> +}
> +
> +static int aspeed_sham_cra_init_alg(struct crypto_tfm *tfm,
> + const char *alg_base)
> +{
> + struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg);
> + struct aspeed_sham_ctx *tctx = crypto_tfm_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> + struct aspeed_hace_alg *ast_alg;
> +
> + ast_alg = container_of(alg, struct aspeed_hace_alg, alg.ahash);
> + tctx->hace_dev = ast_alg->hace_dev;
> + tctx->flags = 0;
> +
> + crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
> + sizeof(struct aspeed_sham_reqctx));
> +
> + if (alg_base) {
> + struct aspeed_sha_hmac_ctx *bctx = tctx->base;
> +
> + tctx->flags |= SHA_FLAGS_HMAC;
> + bctx->shash = crypto_alloc_shash(alg_base, 0,
> + CRYPTO_ALG_NEED_FALLBACK);
> + if (IS_ERR(bctx->shash)) {
> + dev_warn(hace_dev->dev,
> + "base driver '%s' could not be loaded.\n",
> + alg_base);
> + return PTR_ERR(bctx->shash);
> + }
> + }
> +
> + tctx->enginectx.op.do_one_request = aspeed_ahash_do_request;
> + tctx->enginectx.op.prepare_request = aspeed_ahash_prepare_request;
> + tctx->enginectx.op.unprepare_request = NULL;
> +
> + return 0;
> +}
> +
> +static int aspeed_sham_cra_init(struct crypto_tfm *tfm)
> +{
> + return aspeed_sham_cra_init_alg(tfm, NULL);
> +}
> +
> +static int aspeed_sham_cra_sha1_init(struct crypto_tfm *tfm)
> +{
> + return aspeed_sham_cra_init_alg(tfm, "sha1");
> +}
> +
> +static int aspeed_sham_cra_sha224_init(struct crypto_tfm *tfm)
> +{
> + return aspeed_sham_cra_init_alg(tfm, "sha224");
> +}
> +
> +static int aspeed_sham_cra_sha256_init(struct crypto_tfm *tfm)
> +{
> + return aspeed_sham_cra_init_alg(tfm, "sha256");
> +}
> +
> +static int aspeed_sham_cra_sha384_init(struct crypto_tfm *tfm)
> +{
> + return aspeed_sham_cra_init_alg(tfm, "sha384");
> +}
> +
> +static int aspeed_sham_cra_sha512_init(struct crypto_tfm *tfm)
> +{
> + return aspeed_sham_cra_init_alg(tfm, "sha512");
> +}
> +
> +static int aspeed_sham_cra_sha512_224_init(struct crypto_tfm *tfm)
> +{
> + return aspeed_sham_cra_init_alg(tfm, "sha512_224");
> +}
> +
> +static int aspeed_sham_cra_sha512_256_init(struct crypto_tfm *tfm)
> +{
> + return aspeed_sham_cra_init_alg(tfm, "sha512_256");
> +}
Looks like most of these cra_init callback functions are trying to
distinguish hmac from sha algs by passing "alg_base" arg. Can collapse
the logic in aspeed_sham_cra_init_alg() itself and storing alg_base in
instances of aspeed_hace_alg.
if (ast_alg->ahash.setkey()) {
/* hmac related logic */
bctx->shash = crypto_alloc_shash(ast_alg->alg_base, 0,
CRYPTO_ALG_NEED_FALLBACK);
...
> +
> +static void aspeed_sham_cra_exit(struct crypto_tfm *tfm)
> +{
> + struct aspeed_sham_ctx *tctx = crypto_tfm_ctx(tfm);
> + struct aspeed_hace_dev *hace_dev = tctx->hace_dev;
> +
> + AHASH_DBG(hace_dev, "%s\n", crypto_tfm_alg_name(tfm));
> +
> + if (tctx->flags & SHA_FLAGS_HMAC) {
> + struct aspeed_sha_hmac_ctx *bctx = tctx->base;
> +
> + crypto_free_shash(bctx->shash);
> + }
> +}
> +
> +static int aspeed_sham_export(struct ahash_request *req, void *out)
> +{
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> +
> + memcpy(out, rctx, sizeof(*rctx));
> +
> + return 0;
> +}
> +
> +static int aspeed_sham_import(struct ahash_request *req, const void *in)
> +{
> + struct aspeed_sham_reqctx *rctx = ahash_request_ctx(req);
> +
> + memcpy(rctx, in, sizeof(*rctx));
> +
> + return 0;
> +}
> +
> +struct aspeed_hace_alg aspeed_ahash_algs[] = {
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA1_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "sha1",
> + .cra_driver_name = "aspeed-sha1",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA1_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA256_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "sha256",
> + .cra_driver_name = "aspeed-sha256",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA256_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA224_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "sha224",
> + .cra_driver_name = "aspeed-sha224",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA224_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .setkey = aspeed_sham_setkey,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA1_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "hmac(sha1)",
> + .cra_driver_name = "aspeed-hmac-sha1",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA1_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx) +
> + sizeof(struct aspeed_sha_hmac_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_sha1_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .setkey = aspeed_sham_setkey,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA224_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "hmac(sha224)",
> + .cra_driver_name = "aspeed-hmac-sha224",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA224_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx) +
> + sizeof(struct aspeed_sha_hmac_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_sha224_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .setkey = aspeed_sham_setkey,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA256_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "hmac(sha256)",
> + .cra_driver_name = "aspeed-hmac-sha256",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA256_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx) +
> + sizeof(struct aspeed_sha_hmac_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_sha256_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> +};
> +
> +struct aspeed_hace_alg aspeed_ahash_algs_g6[] = {
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA384_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "sha384",
> + .cra_driver_name = "aspeed-sha384",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA384_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA512_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "sha512",
> + .cra_driver_name = "aspeed-sha512",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA512_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sha512s_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA224_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "sha512_224",
> + .cra_driver_name = "aspeed-sha512_224",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA512_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sha512s_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA256_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "sha512_256",
> + .cra_driver_name = "aspeed-sha512_256",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA512_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .setkey = aspeed_sham_setkey,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA384_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "hmac(sha384)",
> + .cra_driver_name = "aspeed-hmac-sha384",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA384_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx) +
> + sizeof(struct aspeed_sha_hmac_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_sha384_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sham_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .setkey = aspeed_sham_setkey,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA512_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "hmac(sha512)",
> + .cra_driver_name = "aspeed-hmac-sha512",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA512_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx) +
> + sizeof(struct aspeed_sha_hmac_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_sha512_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sha512s_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .setkey = aspeed_sham_setkey,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA224_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "hmac(sha512_224)",
> + .cra_driver_name = "aspeed-hmac-sha512_224",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA512_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx) +
> + sizeof(struct aspeed_sha_hmac_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_sha512_224_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> + {
> + .alg.ahash = {
> + .init = aspeed_sha512s_init,
> + .update = aspeed_sham_update,
> + .final = aspeed_sham_final,
> + .finup = aspeed_sham_finup,
> + .digest = aspeed_sham_digest,
> + .setkey = aspeed_sham_setkey,
> + .export = aspeed_sham_export,
> + .import = aspeed_sham_import,
> + .halg = {
> + .digestsize = SHA256_DIGEST_SIZE,
> + .statesize = sizeof(struct aspeed_sham_reqctx),
> + .base = {
> + .cra_name = "hmac(sha512_256)",
> + .cra_driver_name = "aspeed-hmac-sha512_256",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_AHASH |
> + CRYPTO_ALG_ASYNC |
> + CRYPTO_ALG_KERN_DRIVER_ONLY,
> + .cra_blocksize = SHA512_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct aspeed_sham_ctx) +
> + sizeof(struct aspeed_sha_hmac_ctx),
> + .cra_alignmask = 0,
> + .cra_module = THIS_MODULE,
> + .cra_init = aspeed_sham_cra_sha512_256_init,
> + .cra_exit = aspeed_sham_cra_exit,
> + }
> + }
> + },
> + },
> +};
> +
> +void aspeed_unregister_hace_hash_algs(struct aspeed_hace_dev *hace_dev)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(aspeed_ahash_algs); i++)
> + crypto_unregister_ahash(&aspeed_ahash_algs[i].alg.ahash);
> +
> + if (hace_dev->version != AST2600_VERSION)
> + return;
> +
> + for (i = 0; i < ARRAY_SIZE(aspeed_ahash_algs_g6); i++)
> + crypto_unregister_ahash(&aspeed_ahash_algs_g6[i].alg.ahash);
> +}
> +
> +void aspeed_register_hace_hash_algs(struct aspeed_hace_dev *hace_dev)
> +{
> + int rc, i;
> +
> + AHASH_DBG(hace_dev, "\n");
> +
> + for (i = 0; i < ARRAY_SIZE(aspeed_ahash_algs); i++) {
> + aspeed_ahash_algs[i].hace_dev = hace_dev;
> + rc = crypto_register_ahash(&aspeed_ahash_algs[i].alg.ahash);
> + if (rc) {
> + AHASH_DBG(hace_dev, "Failed to register %s\n",
> + aspeed_ahash_algs[i].alg.ahash.halg.base.cra_name);
> + }
> + }
> +
> + if (hace_dev->version != AST2600_VERSION)
> + return;
> +
> + for (i = 0; i < ARRAY_SIZE(aspeed_ahash_algs_g6); i++) {
> + aspeed_ahash_algs_g6[i].hace_dev = hace_dev;
> + rc = crypto_register_ahash(&aspeed_ahash_algs_g6[i].alg.ahash);
> + if (rc) {
> + AHASH_DBG(hace_dev, "Failed to register %s\n",
> + aspeed_ahash_algs_g6[i].alg.ahash.halg.base.cra_name);
> + }
> + }
> +}
> diff --git a/drivers/crypto/aspeed/aspeed-hace.c b/drivers/crypto/aspeed/aspeed-hace.c
> new file mode 100644
> index 000000000000..22af7ab28b0c
> --- /dev/null
> +++ b/drivers/crypto/aspeed/aspeed-hace.c
> @@ -0,0 +1,213 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (c) 2021 Aspeed Technology Inc.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/module.h>
> +#include <linux/of_address.h>
> +#include <linux/of_device.h>
> +#include <linux/of_irq.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +
> +#include "aspeed-hace.h"
> +
> +#ifdef ASPEED_HACE_DEBUG
> +#define HACE_DBG(d, fmt, ...) \
> + dev_info((d)->dev, "%s() " fmt, __func__, ##__VA_ARGS__)
> +#else
> +#define HACE_DBG(d, fmt, ...) \
> + dev_dbg((d)->dev, "%s() " fmt, __func__, ##__VA_ARGS__)
> +#endif
> +
> +/* Weak function for HACE hash */
> +void __weak aspeed_register_hace_hash_algs(struct aspeed_hace_dev *hace_dev)
> +{
> + dev_warn(hace_dev->dev, "%s: Not supported yet\n", __func__);
> +}
> +
> +void __weak aspeed_unregister_hace_hash_algs(struct aspeed_hace_dev *hace_dev)
> +{
> + dev_warn(hace_dev->dev, "%s: Not supported yet\n", __func__);
> +}
> +
> +/* HACE interrupt service routine */
> +static irqreturn_t aspeed_hace_irq(int irq, void *dev)
> +{
> + struct aspeed_hace_dev *hace_dev = (struct aspeed_hace_dev *)dev;
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> + u32 sts;
> +
> + HACE_DBG(hace_dev, "irq status: 0x%x\n", sts);
> +
> + sts = ast_hace_read(hace_dev, ASPEED_HACE_STS);
> + ast_hace_write(hace_dev, sts, ASPEED_HACE_STS);
> +
> + if (sts & HACE_HASH_ISR) {
> + if (hash_engine->flags & CRYPTO_FLAGS_BUSY)
> + tasklet_schedule(&hash_engine->done_task);
> + else
> + dev_warn(hace_dev->dev, "HASH no active requests.\n");
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static void aspeed_hace_hash_done_task(unsigned long data)
> +{
> + struct aspeed_hace_dev *hace_dev = (struct aspeed_hace_dev *)data;
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> +
> + hash_engine->resume(hace_dev);
> +}
> +
> +static void aspeed_hace_register(struct aspeed_hace_dev *hace_dev)
> +{
> + aspeed_register_hace_hash_algs(hace_dev);
> +}
> +
> +static void aspeed_hace_unregister(struct aspeed_hace_dev *hace_dev)
> +{
> + aspeed_unregister_hace_hash_algs(hace_dev);
> +}
> +
> +static const struct of_device_id aspeed_hace_of_matches[] = {
> + { .compatible = "aspeed,ast2500-hace", .data = (void *)5, },
> + { .compatible = "aspeed,ast2600-hace", .data = (void *)6, },
> + {},
> +};
> +
> +static int aspeed_hace_probe(struct platform_device *pdev)
> +{
> + const struct of_device_id *hace_dev_id;
> + struct aspeed_engine_hash *hash_engine;
> + struct aspeed_hace_dev *hace_dev;
> + struct resource *res;
> + int rc;
> +
> + hace_dev = devm_kzalloc(&pdev->dev, sizeof(struct aspeed_hace_dev),
> + GFP_KERNEL);
> + if (!hace_dev)
> + return -ENOMEM;
> +
> + hace_dev_id = of_match_device(aspeed_hace_of_matches, &pdev->dev);
> + if (!hace_dev_id) {
> + dev_err(&pdev->dev, "Failed to match hace dev id\n");
> + return -EINVAL;
> + }
> +
> + hace_dev->dev = &pdev->dev;
> + hace_dev->version = (unsigned long)hace_dev_id->data;
> + hash_engine = &hace_dev->hash_engine;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +
> + platform_set_drvdata(pdev, hace_dev);
> +
> + hace_dev->regs = devm_ioremap_resource(&pdev->dev, res);
> + if (!hace_dev->regs) {
> + dev_err(&pdev->dev, "Failed to map resources\n");
> + return -ENOMEM;
> + }
> +
> + /* Get irq number and register it */
> + hace_dev->irq = platform_get_irq(pdev, 0);
> + if (!hace_dev->irq) {
> + dev_err(&pdev->dev, "Failed to get interrupt\n");
> + return -ENXIO;
> + }
> +
> + rc = devm_request_irq(&pdev->dev, hace_dev->irq, aspeed_hace_irq, 0,
> + dev_name(&pdev->dev), hace_dev);
> + if (rc) {
> + dev_err(&pdev->dev, "Failed to request interrupt\n");
> + return rc;
> + }
> +
> + /* Get clk and enable it */
> + hace_dev->clk = devm_clk_get(&pdev->dev, NULL);
> + if (IS_ERR(hace_dev->clk)) {
> + dev_err(&pdev->dev, "Failed to get clk\n");
> + return -ENODEV;
> + }
> +
> + rc = clk_prepare_enable(hace_dev->clk);
> + if (rc) {
> + dev_err(&pdev->dev, "Failed to enable clock 0x%x\n", rc);
> + return rc;
> + }
> +
> + /* Initialize crypto hardware engine structure for hash */
> + hace_dev->crypt_engine_hash = crypto_engine_alloc_init(hace_dev->dev,
> + true);
> + if (!hace_dev->crypt_engine_hash) {
> + rc = -ENOMEM;
> + goto clk_exit;
> + }
> +
> + rc = crypto_engine_start(hace_dev->crypt_engine_hash);
> + if (rc)
> + goto err_engine_hash_start;
> +
> + tasklet_init(&hash_engine->done_task, aspeed_hace_hash_done_task,
> + (unsigned long)hace_dev);
> +
> + /* Allocate DMA buffer for hash engine input used */
> + hash_engine->ahash_src_addr =
> + dmam_alloc_coherent(&pdev->dev,
> + ASPEED_HASH_SRC_DMA_BUF_LEN,
> + &hash_engine->ahash_src_dma_addr,
> + GFP_KERNEL);
> + if (!hash_engine->ahash_src_addr) {
> + dev_err(&pdev->dev, "Failed to allocate dma buffer\n");
> + rc = -ENOMEM;
> + goto err_engine_hash_start;
> + }
> +
> + aspeed_hace_register(hace_dev);
> +
> + dev_info(&pdev->dev, "Aspeed Crypto Accelerator successfully registered\n");
> +
> + return 0;
> +
> +err_engine_hash_start:
> + crypto_engine_exit(hace_dev->crypt_engine_hash);
> +clk_exit:
> + clk_disable_unprepare(hace_dev->clk);
> +
> + return rc;
> +}
> +
> +static int aspeed_hace_remove(struct platform_device *pdev)
> +{
> + struct aspeed_hace_dev *hace_dev = platform_get_drvdata(pdev);
> + struct aspeed_engine_hash *hash_engine = &hace_dev->hash_engine;
> +
> + aspeed_hace_unregister(hace_dev);
> +
> + crypto_engine_exit(hace_dev->crypt_engine_hash);
> +
> + tasklet_kill(&hash_engine->done_task);
> +
> + clk_disable_unprepare(hace_dev->clk);
> +
> + return 0;
> +}
> +
> +MODULE_DEVICE_TABLE(of, aspeed_hace_of_matches);
> +
> +static struct platform_driver aspeed_hace_driver = {
> + .probe = aspeed_hace_probe,
> + .remove = aspeed_hace_remove,
> + .driver = {
> + .name = KBUILD_MODNAME,
> + .of_match_table = aspeed_hace_of_matches,
> + },
> +};
> +
> +module_platform_driver(aspeed_hace_driver);
> +
> +MODULE_AUTHOR("Neal Liu <neal_liu at aspeedtech.com>");
> +MODULE_DESCRIPTION("Aspeed HACE driver Crypto Accelerator");
> +MODULE_LICENSE("GPL");
> diff --git a/drivers/crypto/aspeed/aspeed-hace.h b/drivers/crypto/aspeed/aspeed-hace.h
> new file mode 100644
> index 000000000000..de7c6ea75b2c
> --- /dev/null
> +++ b/drivers/crypto/aspeed/aspeed-hace.h
> @@ -0,0 +1,181 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +#ifndef __ASPEED_HACE_H__
> +#define __ASPEED_HACE_H__
> +
> +#include <linux/interrupt.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/fips.h>
> +#include <linux/dma-mapping.h>
> +#include <crypto/scatterwalk.h>
> +#include <crypto/internal/aead.h>
> +#include <crypto/internal/akcipher.h>
> +#include <crypto/internal/hash.h>
> +#include <crypto/internal/kpp.h>
> +#include <crypto/internal/skcipher.h>
> +#include <crypto/algapi.h>
> +#include <crypto/engine.h>
> +#include <crypto/hmac.h>
> +#include <crypto/sha1.h>
> +#include <crypto/sha2.h>
> +
> +/*****************************
> + * *
> + * HACE register definitions *
> + * *
> + * ***************************/
> +
> +#define ASPEED_HACE_STS 0x1C /* HACE Status Register */
> +#define ASPEED_HACE_HASH_SRC 0x20 /* Hash Data Source Base Address Register */
> +#define ASPEED_HACE_HASH_DIGEST_BUFF 0x24 /* Hash Digest Write Buffer Base Address Register */
> +#define ASPEED_HACE_HASH_KEY_BUFF 0x28 /* Hash HMAC Key Buffer Base Address Register */
> +#define ASPEED_HACE_HASH_DATA_LEN 0x2C /* Hash Data Length Register */
> +#define ASPEED_HACE_HASH_CMD 0x30 /* Hash Engine Command Register */
> +
> +/* interrupt status reg */
> +#define HACE_HASH_ISR BIT(9)
> +#define HACE_HASH_BUSY BIT(0)
> +
> +/* hash cmd reg */
> +#define HASH_CMD_MBUS_REQ_SYNC_EN BIT(20)
> +#define HASH_CMD_HASH_SRC_SG_CTRL BIT(18)
> +#define HASH_CMD_SHA512_224 (0x3 << 10)
> +#define HASH_CMD_SHA512_256 (0x2 << 10)
> +#define HASH_CMD_SHA384 (0x1 << 10)
> +#define HASH_CMD_SHA512 (0)
> +#define HASH_CMD_INT_ENABLE BIT(9)
> +#define HASH_CMD_HMAC (0x1 << 7)
> +#define HASH_CMD_ACC_MODE (0x2 << 7)
> +#define HASH_CMD_HMAC_KEY (0x3 << 7)
> +#define HASH_CMD_SHA1 (0x2 << 4)
> +#define HASH_CMD_SHA224 (0x4 << 4)
> +#define HASH_CMD_SHA256 (0x5 << 4)
> +#define HASH_CMD_SHA512_SER (0x6 << 4)
> +#define HASH_CMD_SHA_SWAP (0x2 << 2)
> +
> +#define HASH_SG_LAST_LIST BIT(31)
> +
> +#define CRYPTO_FLAGS_BUSY BIT(1)
> +
> +#define SHA_OP_UPDATE 1
> +#define SHA_OP_FINAL 2
> +
> +#define SHA_FLAGS_SHA1 BIT(0)
> +#define SHA_FLAGS_SHA224 BIT(1)
> +#define SHA_FLAGS_SHA256 BIT(2)
> +#define SHA_FLAGS_SHA384 BIT(3)
> +#define SHA_FLAGS_SHA512 BIT(4)
> +#define SHA_FLAGS_SHA512_224 BIT(5)
> +#define SHA_FLAGS_SHA512_256 BIT(6)
> +#define SHA_FLAGS_HMAC BIT(8)
> +#define SHA_FLAGS_FINUP BIT(9)
> +#define SHA_FLAGS_MASK (0xff)
> +
> +#define ASPEED_CRYPTO_SRC_DMA_BUF_LEN 0xa000
> +#define ASPEED_CRYPTO_DST_DMA_BUF_LEN 0xa000
> +#define ASPEED_CRYPTO_GCM_TAG_OFFSET 0x9ff0
> +#define ASPEED_HASH_SRC_DMA_BUF_LEN 0xa000
> +#define ASPEED_HASH_QUEUE_LENGTH 50
> +
> +struct aspeed_hace_dev;
> +
> +typedef int (*aspeed_hace_fn_t)(struct aspeed_hace_dev *);
> +
> +struct aspeed_sg_list {
> + __le32 len;
> + __le32 phy_addr;
> +};
> +
> +struct aspeed_engine_hash {
> + struct tasklet_struct done_task;
> + unsigned long flags;
> + struct ahash_request *req;
> +
> + /* input buffer */
> + void *ahash_src_addr;
> + dma_addr_t ahash_src_dma_addr;
> +
> + dma_addr_t src_dma;
> + dma_addr_t digest_dma;
> +
> + size_t src_length;
> +
> + /* callback func */
> + aspeed_hace_fn_t resume;
> + aspeed_hace_fn_t dma_prepare;
> +};
> +
> +struct aspeed_sha_hmac_ctx {
> + struct crypto_shash *shash;
> + u8 ipad[SHA512_BLOCK_SIZE];
> + u8 opad[SHA512_BLOCK_SIZE];
> +};
> +
> +struct aspeed_sham_ctx {
> + struct crypto_engine_ctx enginectx;
> +
> + struct aspeed_hace_dev *hace_dev;
> + unsigned long flags; /* hmac flag */
> +
> + struct aspeed_sha_hmac_ctx base[0];
> +};
> +
> +struct aspeed_sham_reqctx {
> + unsigned long flags; /* final update flag should no use*/
> + unsigned long op; /* final or update */
> + u32 cmd; /* trigger cmd */
> +
> + /* walk state */
> + struct scatterlist *src_sg;
> + int src_nents;
> + unsigned int offset; /* offset in current sg */
> + unsigned int total; /* per update length */
> +
> + size_t digsize;
> + size_t block_size;
> +
> + /* remain data buffer */
> + u8 buffer[SHA512_BLOCK_SIZE * 2];
> + dma_addr_t buffer_dma_addr;
> + size_t bufcnt; /* buffer counter */
> +
> + /* output buffer */
> + u8 digest[SHA512_DIGEST_SIZE] __aligned(64);
> + dma_addr_t digest_dma_addr;
> + u64 digcnt[2];
> +};
> +
> +struct aspeed_hace_dev {
> + void __iomem *regs;
> + struct device *dev;
> + int irq;
> + struct clk *clk;
> + unsigned long version;
> +
> + struct crypto_engine *crypt_engine_hash;
> +
> + struct aspeed_engine_hash hash_engine;
> +};
> +
> +struct aspeed_hace_alg {
> + struct aspeed_hace_dev *hace_dev;
> + union {
> + struct skcipher_alg skcipher;
> + struct ahash_alg ahash;
> + } alg;
> +};
> +
> +enum aspeed_version {
> + AST2500_VERSION = 5,
> + AST2600_VERSION
> +};
> +
> +#define ast_hace_write(hace, val, offset) \
> + writel((val), (hace)->regs + (offset))
> +#define ast_hace_read(hace, offset) \
> + readl((hace)->regs + (offset))
> +
> +void aspeed_register_hace_hash_algs(struct aspeed_hace_dev *hace_dev);
> +void aspeed_unregister_hace_hash_algs(struct aspeed_hace_dev *hace_dev);
> +
> +#endif
More information about the Linux-aspeed
mailing list